CN104874714B - A kind of commutator segment making method - Google Patents
A kind of commutator segment making method Download PDFInfo
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- CN104874714B CN104874714B CN201510196523.2A CN201510196523A CN104874714B CN 104874714 B CN104874714 B CN 104874714B CN 201510196523 A CN201510196523 A CN 201510196523A CN 104874714 B CN104874714 B CN 104874714B
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- hanging groove
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- sheet body
- upsetting
- shaping
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Abstract
The present invention discloses a kind of commutator segment making method, it is characterised in that comprise the following steps: a. copper wires drawing procedure; B. fixed length cuts off operation; C. first cold-heading operation, section bar head is flat by first time pre-upsetting, makes hanging groove at the top of sheet body left and right side with lower portion upsetting; D. second cold-heading operation take hanging groove as location benchmark, and section bar head is flat by second time upsetting, and the top of hanging groove upwards extends; E. the 3rd road cold-heading operation take hanging groove as location benchmark, and section bar head is flat by third time upsetting, stepped, and the body formed size of sheet is a bit larger tham physical size; F. the 4th road cold-heading operation, take hanging groove as location benchmark, workpiece squeezed die cavity from top to bottom and discharge port on front side of mold cavity bottoms out, sheet body is upwards run through at the top of hanging groove, sheet Slot shaping, mould intracavity wall is provided with shaping mouth to carry out shaping to sheet body and step and makes it to reach physical size. By the commutator segment that aforesaid method is shaping, the smooth not warpage of sheet body, formed precision height, it is to increase made reverser quality.
Description
Technical field
The present invention relates to the making method of a kind of commutator segment.
Background technology
Reverser is divided into hook type reverser, tank commutator and end commutator three kinds, tradition tank commutator, and its commutator segment is made up of sheet body and the step being located at sheet body top usually, in L-type between sheet body and step. The making of above-mentioned grooved commutator segment, has and adopts Sheet Metal Forming Technology, but can produce a lot of scrap stock, and the utilization ratio of copper product is low, and production cost is also high, easily causes sheet body warpage in punching course simultaneously, the made tank commutator quality of impact; Have and adopt upsetting technique, but because needing to carry out the upper demoulding, die cavity must be designed to there is certain tapering, and this has obliquity (namely upper thick and lower thin, also to belong to the one of warpage unfairness) with regard to the left and right side of commutator segment after causing cold-heading molding, in addition, during the demoulding, first step departs from die cavity, owing to stress can make the outer outstanding end of step bow, causing the sheet body back side (i.e. the interior side of sheet body) to produce bending, these all can seriously affect the quality of made tank commutator.
Summary of the invention
In view of current known technology Problems existing, the technical problem to be solved in the present invention is the commutator segment making method being to provide a kind of smooth not warpage of body, formed precision height, improve made reverser quality.
The present invention takes following technical scheme to complete:
A kind of commutator segment making method, commutator segment is made up of sheet body and the step being located at sheet body top, the left and right side of sheet body is provided with film trap along sheet height direction, it is characterized in that commutator segment making method comprises the following steps: a. copper wires drawing procedure, drawing goes out quite but does not have the section bar of film trap with slice shape; B. fixed length cuts off operation, and section bar is cut off into desired length; C. first cold-heading operation, in the die cavity of the first cold upsetting die of car, section bar head is flat by first time upsetting, makes hanging groove at the top of sheet body left and right side with lower portion upsetting simultaneously, the shape of hanging groove and position are suitable with film trap, then eject die cavity from the bottom up by push rod logical after mould; D. second cold-heading operation, in the 2nd cold upsetting die of car, is provided with hanging strip and hanging groove carries out guiding location, take hanging groove as location benchmark about mould intracavity wall, section bar head is flat by second time upsetting at upper cavity, and the top of hanging groove upwards extends; E. the 3rd road cold-heading operation, in the 3rd cold upsetting die of car, it is provided with hanging strip about mould intracavity wall and hanging groove is carried out guiding location, take hanging groove as location benchmark, section bar head is flat by third time upsetting at upper cavity, and stepped, is a bit larger tham physical size with the body formed size of time slice, the top of hanging groove extends upwardly to overhead height higher than bench floor height, then ejects die cavity from the bottom up by push rod logical after mould; F. the 4th road cold-heading operation, in the die cavity of the 4th cold upsetting die of car, it is provided with hanging strip about mould intracavity wall and hanging groove is carried out guiding location, take hanging groove as location benchmark, workpiece squeezed die cavity from top to bottom and discharge port on front side of mold cavity bottoms out, so sheet body is upwards run through at the top of hanging groove, sheet Slot shaping, simultaneously mould intracavity wall is provided with shaping mouth and left and right side, the outer side of the left and right side of sheet body, interior side and step is carried out shaping and make it to reach physical size, and last commutator segment is shaping.
Above-mentioned technical scheme, commutator segment mainly have employed cold heading technique and completes, first, step is shaping gradually through the cold-heading of many roads, simultaneously, in first cold-heading operation process, hanging groove is made in the left and right side upsetting of sheet body, and be location benchmark taking hanging groove, in second cold-heading operation, section bar head is flat by second time upsetting at upper cavity, the top of hanging groove upwards extends, in the 3rd road cold-heading operation, stepped and the body formed size of sheet is a bit larger tham physical size, the top of hanging groove extends upwardly to the height higher than bench floor, finally, it is location benchmark again taking hanging groove, by the shaping of the 4th road cold-heading operation, workpiece is squeezed the discharge port of die cavity through shaping mouth and on front side of mold cavity bottoms out from top to bottom, the left and right side of sheet body is made after shaping, the left and right side of interior side and step, outer side has high dimensional precision, and the film trap of commutator segment is run through in die cavity process and shaping squeezing, here crucially directly discharge port on front side of mold cavity bottoms is out after workpiece shaping, die cavity does not need to arrange gradient, therefore can ensure that the left and right side of commutator segment does not have warpage unfairness phenomenon, the outer outstanding end of step finally leaves die cavity simultaneously, and shaping extruding there will not be big stress, therefore there will not be and bow, the sheet body back side (i.e. the interior side of sheet body) is caused to produce bending phenomenon, in addition, due to whole shaping, also comprise in the two or three cold-heading operation process and have hanging groove accurately to locate all the time, therefore sheet body, step dimension and position precision can not only be ensured, also can better ensure the smooth not warpage of sheet body, formed precision height simultaneously, thus improve the quality of made reverser.
Accompanying drawing explanation
The present invention has the following drawings:
Fig. 1 is the front view that fixed length cuts off rear section bar,
Fig. 2 is the right view of Fig. 1,
Fig. 3 is the front view of section bar after first cold-heading operation,
Fig. 4 is the right view of Fig. 3,
Fig. 5 is the front view of section bar after second cold-heading operation,
Fig. 6 is the right view of Fig. 5,
Fig. 7 is the front view of section bar after the 3rd road cold-heading operation,
Fig. 8 is the right view of Fig. 7,
Fig. 9 is the front view of workpiece after the 4th road cold-heading operation,
Figure 10 is the right view of Fig. 9
Figure 11 be the first cold upsetting die of car partly cut open structure iron,
Figure 12 be the 2nd cold upsetting die of car partly cut open structure iron,
Figure 13 be the 3rd cold upsetting die of car partly cut open structure iron,
Figure 14 be the 4th cold upsetting die of car partly cut open structure iron.
Embodiment
See Fig. 9 and Figure 10, commutator segment workpiece made by the present invention is made up of sheet body 2 and the step 1 being located at sheet body 2 top, step 1 and sheet body 2 are in L-type, the left and right side of sheet body 2 is provided with film trap 3 along sheet height direction, the left and right side 14 of sheet body, interior side 12, the left and right side 13 of step, outer side 11. the commutator segment making method of the present invention comprises the following steps: a. copper wires drawing procedure, and drawing goes out quite but does not have the section bar of film trap with slice shape, sees Fig. 1 and Fig. 2, b. fixed length cuts off operation, and section bar is cut off into desired length, sees Fig. 1 and Fig. 2, c. first cold-heading operation, see Fig. 3, Fig. 4 and Figure 11, in the die cavity of the first cold upsetting die of car A, section bar head is flat by first time upsetting, make hanging groove 5 at the top of sheet body left and right side with lower portion upsetting simultaneously, the shape of hanging groove 5 and position are suitable with film trap 3, then eject die cavity from the bottom up by push rod logical after mould, d. second cold-heading operation, is shown in Fig. 5, Fig. 6 and Figure 12, in the 2nd cold upsetting die of car B, it is provided with hanging strip B1 about mould intracavity wall and hanging groove 5 is carried out guiding location, taking hanging groove 5 as location benchmark, section bar head is flat by second time upsetting at upper cavity, and the top of hanging groove 5 upwards extends close to bench floor 4 height, e. the 3rd road cold-heading operation, see Fig. 7, Fig. 8 and Figure 13, in the 3rd cold upsetting die of car C, being provided with hanging strip C1 about mould intracavity wall and hanging groove 5 carries out guiding location, taking hanging groove 5 as location benchmark, section bar head is flat by third time upsetting at upper cavity, step 1 is shaping, being greater than physical size 0.02-0.03mm with time slice body 2 compact dimensions, the top of hanging groove 5 extends upwardly to overhead height higher than bench floor 4 height, then ejects die cavity from the bottom up by push rod logical after mould, e. the 4th road cold-heading operation, see Fig. 9, Figure 10 and Figure 14, in the die cavity of the 4th cold upsetting die of car D, it is provided with hanging strip D1 about mould intracavity wall and hanging groove is carried out guiding location, take hanging groove as location benchmark, workpiece squeezed die cavity from top to bottom and discharge port D3 on front side of mold cavity bottoms out, so sheet body is upwards run through at the top of hanging groove, film trap 3 is shaping, mould intracavity wall is provided with shaping mouth D2 to the left and right side 14 of sheet body simultaneously, the left and right side 13 of interior side 12 and step, outer side 11 carries out shaping and makes it to reach physical size, last commutator segment is shaping, the smooth not warpage of the sheet body of shaping commutator segment, formed precision height, thus improve the quality of made reverser.
Claims (1)
1. a commutator segment making method, commutator segment is made up of sheet body and the step being located at sheet body top, the left and right side of sheet body is provided with film trap along sheet height direction, it is characterized in that commutator segment making method comprises the following steps: a. copper wires drawing procedure, drawing goes out quite but does not have the section bar of film trap with slice shape; B. fixed length cuts off operation, and section bar is cut off into desired length; C. first cold-heading operation, in the die cavity of the first cold upsetting die of car, section bar head is flat by first time upsetting, makes hanging groove at the top of sheet body left and right side with lower portion upsetting simultaneously, the shape of hanging groove and position are suitable with film trap, then eject die cavity from the bottom up by push rod logical after mould; D. second cold-heading operation, in the 2nd cold upsetting die of car, is provided with hanging strip and hanging groove carries out guiding location, take hanging groove as location benchmark about mould intracavity wall, section bar head is flat by second time upsetting at upper cavity, and the top of hanging groove upwards extends; E. the 3rd road cold-heading operation, in the 3rd cold upsetting die of car, it is provided with hanging strip about mould intracavity wall and hanging groove is carried out guiding location, take hanging groove as location benchmark, section bar head is flat by third time upsetting at upper cavity, and stepped, is a bit larger tham physical size with the body formed size of time slice, the top of hanging groove extends upwardly to overhead height higher than bench floor height, then ejects die cavity from the bottom up by push rod logical after mould; F. the 4th road cold-heading operation, in the die cavity of the 4th cold upsetting die of car, it is provided with hanging strip about mould intracavity wall and hanging groove is carried out guiding location, take hanging groove as location benchmark, workpiece squeezed die cavity from top to bottom and discharge port on front side of mold cavity bottoms out, so sheet body is upwards run through at the top of hanging groove, sheet Slot shaping, simultaneously mould intracavity wall is provided with shaping mouth and left and right side, the outer side of the left and right side of sheet body, interior side and step is carried out shaping and make it to reach physical size, and last commutator segment is shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510196523.2A CN104874714B (en) | 2015-04-24 | 2015-04-24 | A kind of commutator segment making method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510196523.2A CN104874714B (en) | 2015-04-24 | 2015-04-24 | A kind of commutator segment making method |
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| CN104874714A CN104874714A (en) | 2015-09-02 |
| CN104874714B true CN104874714B (en) | 2016-06-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370799A (en) * | 1980-03-24 | 1983-02-01 | Kolektor P.C. | Method for manufacturing unfinished parts for pressed material commutators |
| CN1403226A (en) * | 2002-06-17 | 2003-03-19 | 南昌大学 | Integral cold forging process of stepped tank commutator |
| EP1450452A2 (en) * | 2003-01-16 | 2004-08-25 | Morganite Incorporated | Riser commutators |
| CN103227403A (en) * | 2013-02-07 | 2013-07-31 | 宁波胜克换向器有限公司 | Commutator film processing method of elevated-platform-type commutator and commutator processing method thereof |
-
2015
- 2015-04-24 CN CN201510196523.2A patent/CN104874714B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370799A (en) * | 1980-03-24 | 1983-02-01 | Kolektor P.C. | Method for manufacturing unfinished parts for pressed material commutators |
| CN1403226A (en) * | 2002-06-17 | 2003-03-19 | 南昌大学 | Integral cold forging process of stepped tank commutator |
| EP1450452A2 (en) * | 2003-01-16 | 2004-08-25 | Morganite Incorporated | Riser commutators |
| CN103227403A (en) * | 2013-02-07 | 2013-07-31 | 宁波胜克换向器有限公司 | Commutator film processing method of elevated-platform-type commutator and commutator processing method thereof |
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| Publication number | Publication date |
|---|---|
| CN104874714A (en) | 2015-09-02 |
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Denomination of invention: A manufacturing method of commutator Effective date of registration: 20220119 Granted publication date: 20160601 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: ZHEJIANG DONGRUI MACHINERY INDUSTRY Co.,Ltd. Registration number: Y2022990000043 |
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Date of cancellation: 20230130 Granted publication date: 20160601 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: ZHEJIANG DONGRUI MACHINERY INDUSTRY Co.,Ltd. Registration number: Y2022990000043 |